/*
 *  Copyright 2004 Blandware (http://www.blandware.com)
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package com.blandware.atleap.webapp.action.core.backup;

import com.blandware.atleap.webapp.action.core.grid.BaseGridAction;
import com.blandware.atleap.service.core.BackupManager;
import com.blandware.atleap.common.Constants;
import org.apache.struts.action.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * <p>Action to show full list of all backup archives</p>
 * <p/>
 * <p><a href="ListArchivesAction.java.html"><i>View Source</i></a></p>
 *
 * @author Andrey Grebnev <a href="mailto:andrey.grebnev@blandware.com">&lt;andrey.grebnev@blandware.com&gt;</a>
 * @version $Revision: 1.4 $ $Date: 2006/03/25 09:04:41 $
 * @struts.action path="/core/backup/list"
 * validate="false"
 * roles="core-backup-list"
 * @struts.action-forward name="listArchives"
 * path=".core.backup.list"
 */
public class ListArchivesAction extends BaseGridAction {

    /**
     * @param mapping  The ActionMapping used to select this instance
     * @param form     The optional ActionForm bean for this request (if any)
     * @param request  The HTTP request we are proceeding
     * @param response The HTTP response we are creating
     * @return an ActionForward instance describing where and how
     *         control should be forwarded, or null if response
     *         has already been completed
     */
    public ActionForward execute(ActionMapping mapping, ActionForm form,
                                 HttpServletRequest request, HttpServletResponse response) throws Exception {

        BackupManager backupManager = (BackupManager) getBean(Constants.BACKUP_MANAGER_BEAN);
        backupManager.createDirIfNotExists();
        boolean canListArchives = backupManager.canListArchives();
        request.setAttribute("canListArchives", new Boolean(canListArchives));
        if (!canListArchives) {
            ActionMessages errors = new ActionMessages();
            errors.add("cannotList", new ActionMessage("core.backup.errors.cannotList"));
            saveErrors(request, errors);
        }

        // save transaction token in request
        saveToken(request);
        return mapping.findForward("listArchives");
    }
}
